The rocker was staying at MGM Grand in Detroit where he was found dead after the show.

Singer Chris Cornell performs at Prophets of Rage and Friends' Anti Inaugural Ball at the Taragram Ballroom on January 20, 2017 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)

Sources tell Local 4 Cornell's wife called a family friend and asked him to check on the singer. That friend forced open the hotel room door where Cornell was found dead in the bathroom with something around his neck.

Sources said it appears to be a suicide.

Cornell gained fame as the lead singer of Soundgarden and later Audioslave. In a statement to The Associated Press, Brian Bumbery called the death "sudden and unexpected" and said his wife and family were shocked by it.

The statement said the family would be working closely with the medical examiner to determine the cause and asked for privacy.